summaryrefslogtreecommitdiffstats
path: root/perl-install/network/pxe.pm
blob: d0c9a384a6f0293605af67b748fa6b23ddb85aac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
package network::pxe;

use common;
use network::tools;
use Xconfig::resolution_and_depth;

our $tftp_root = "/var/lib/tftpboot";
my $client_path = '/X86PC/linux';
our $pxelinux_client_root = $tftp_root . $client_path;
our $pxelinux_images = $pxelinux_client_root . '/images';
our $pxelinux_help_file = $pxelinux_client_root . '/help.txt';
our $pxelinux_message_file = $pxelinux_client_root . '/messages';
my $pxelinux_config_root = $pxelinux_client_root . '/pxelinux.cfg';
our $pxelinux_config_file = $pxelinux_config_root . '/default';
our $pxe_config_file = '/etc/pxe.conf';

my @global_pxelinux_settings = qw(PROMPT DEFAULT DISPLAY TIMEOUT F1);
my @append_settings = qw(initrd ramdisk_size vga display);
my @automatic_settings = qw(method interface network server directory);

our %vga_bios_to_resolution = (
		    'normal' => "vga",
		    'text' => "text",
		    '' => "automatic",
		     map { $_->{bios} => "$_->{X}x$_->{Y}" } grep { $_->{Depth} == 16 } Xconfig::resolution_and_depth::bios_vga_modes()
		       );
our %vga_resolution_to_bios = reverse %vga_bios_to_resolution;

sub read_pxelinux_help {
    my ($help_file) = @_;
    my %info;
    foreach (cat_($help_file)) {
	/^(\w+)\s*:\s*(.*)$/ and $info{$1} = $2;
    }
    \%info;
}

sub read_pxelinux_conf {
    my ($conf_file, $help_file) = @_;
    my (%conf);
    my $info = read_pxelinux_help($help_file);
    my $entry = {};
    foreach (cat_($conf_file)) {
	my $global = join('|', @global_pxelinux_settings);
	if (/^($global)\s+(.*)/) {
	    $conf{lc($1)} = $2;
	} elsif (/^label\s+(.*)/) {
	    $entry->{label} = $1;
	} elsif (/^\s+LOCALBOOT\s+(\d+)/) {
	    $entry->{localboot} = $1;
	} elsif (/^\s+KERNEL\s+(.*)/) {
	    $entry->{kernel} = $1;
	} elsif (/^\s+APPEND\s+(.*)/) {
	    my @others;
	    foreach (split /\s+/, $1) {
		my ($option, $value) = /^(.+?)(?:=(.*))?$/;
		if (member($option, @append_settings)) {
		    $entry->{$option} = $value;
		} elsif ($option eq 'automatic') {
		    foreach (split /,/, $value) {
			my ($option, $value) = /^(.+?):(.+)$/;
			$entry->{$option} = $value;
		    }
		} else {
		    push @others, $_;
		}
	    }
	    $entry->{others} = join(' ', @others);
	}
	if (exists $entry->{label} && (exists $entry->{localboot} || exists $entry->{kernel} && exists $entry->{initrd})) {
	    $entry->{info} = $info->{$entry->{label}};
	    exists $entry->{vga} and $entry->{vga} = $vga_bios_to_resolution{$entry->{vga}};
	    push @{$conf{entries}}, $entry;
	    $entry = {};
	}
    }
    \%conf;
}


sub list_pxelinux_labels {
    my ($conf) = @_;
    map { $_->{label} } @{$conf->{entries}};
}

sub write_pxelinux_conf {
    my ($conf, $conf_file) = @_;

    output($conf_file,
	   join("\n",
		"# DO NOT EDIT auto_generated by drakpxelinux.pl",
		(map { $_ . ' ' . $conf->{lc($_)} } @global_pxelinux_settings),
		'',
		(map {
		    my $e = $_;
		    my $automatic = join(',', map { "$_:$e->{$_}" } grep { $e->{$_} } @automatic_settings);
		    ("label $e->{label}",
		     exists $e->{localboot} ?
		     "    LOCALBOOT $e->{localboot}" :
		     ("    KERNEL $e->{kernel}",
		      "    APPEND " . join(' ',
					   (map { "$_=$e->{$_}" } grep { $e->{$_} } @append_settings),
					   if_($automatic, "automatic=$automatic"),
					   $e->{others})),
		     '');
		 } @{$conf->{entries}})));
}

sub write_default_pxe_messages {
  my ($net) = @_;
  my $hostname = $net->{hostname} || chomp_(`hostname`);
  output($pxelinux_message_file, <<EOF);

                   Welcome to Mandrakelinux PXE Server
                                                       Pxelinux
              .              .-----------------------------------.
             /|\\            /    Press F1 for available images    \\
            /_|_\\           \\    Hosted by  $hostname
            \\ | /   _       /'-----------------------------------'
             \\|/   (')     /
              '.    U     /                                (O__
                 .   '.  /                 (o_  (o_  (0_   //\\
                 {o_   (o_  (o_  (o_  (o_  //\\  //\\  //\\  //  )
                 (')_  (`)_ (/)_ (/)_ (/)_ V_/_ V_/_ V_/_ V__/_
            ---------------------------------------------------------

 press F1 for help
EOF
}

sub write_default_pxe_help() {
  output($pxelinux_help_file, <<EOF);
Available images are:
---------------------
local: local boot
EOF
}

sub add_in_help {
  my ($NAME, $INFO) = @_;
  if (!any { /$NAME/ } cat_($pxelinux_help_file)) {
    append_to_file($pxelinux_help_file, <<EOF);
$NAME : $INFO
EOF

  } else {
    substInFile {
      s/$NAME.*/$NAME : $INFO/;
    } $pxelinux_help_file;
  }
}

sub change_label_in_help {
  my ($NAMEOLD, $NEWNAME) = @_;
  substInFile {
    s/$NAMEOLD\s(.*)/$NEWNAME $1/;
  } $pxelinux_help_file;
}

# remove entry in help.txt
sub remove_in_help {
  my ($NAME) = @_;
  substInFile {
    s/^$NAME\s:.*//x;
    s/^\s*$//;
  } $pxelinux_help_file;
}

# adjust pxe confi with good value
sub write_pxe_conf {
  my ($net, $interface) = @_;
  if (!-f "$pxe_config_file.orig") { cp_af($pxe_config_file, "$pxe_config_file.orig") }
  my $domainname = $net->{resolv}{domainname} || chomp_(`dnsdomainname`);
  my $ip_address = network::tools::get_interface_ip_address($net, $interface);

  substInFile {
    s/default_address.*/default_address=$ip_address/;
    s/mtftp_address.*/mtftp_address=$ip_address/;
    s/domain.*/domain=$domainname/;
  } $pxe_config_file;
}


sub get_pxelinux_config_file_for_mac_address {
    my ($mac_address) = @_;
    #- 01 is the hardware type: Ethernet (ARP type 1)
    $pxelinux_config_root . "/" . join('-', '01', split(/:/, $mac_address));
}

sub set_profile_for_mac_address {
    my ($profile, $to_install, $mac_address) = @_;
    if ($profile) {
	symlinkf("profiles/" . ($to_install ? "install/" : "boot/") . $profile, get_pxelinux_config_file_for_mac_address($mac_address));
    } else {
	unlink get_pxelinux_config_file_for_mac_address($mac_address);
    }
}

#- returns (profile_type, profile_name)
sub profile_from_file {
    my ($file) = @_;
    $file =~ m!(?:^|/)profiles/(\w+)/(.*)?$!;
}

sub read_profiles() {
    my %profiles_conf;

    foreach (all($pxelinux_config_root)) {
	my $file = $pxelinux_config_root . '/' . $_;
        if (-l $file && /^01(?:-([0-9a-z]{2}))+$/) {
	    #- per MAC address settings
	    #- the filename looks like 01-aa-bb-cc-dd-ee-ff
	    #- where AA:BB:CC:DD:EE:FF is the MAC address
	    my ($type, $name) = profile_from_file(readlink($file));
	    tr/-/:/;
	    my $mac_address = substr($_, 3);
	    $profiles_conf{per_mac}{$mac_address} = { profile => $name, to_install => $type eq 'install' };
	}
    }

    foreach my $type (qw(boot install)) {
        my $root = $pxelinux_config_root . '/profiles/' . $type;
        mkdir_p($root);
        $profiles_conf{profiles}{$type}{$_} = 1 foreach all($root);
    }

    \%profiles_conf;
}

#- returns (pxelinux entries file, help file)
sub get_pxelinux_profile_path {
    my ($profile, $type) = @_;
    my $root = $pxelinux_config_root . '/profiles/' . $type;
    "$root/$profile", "$root/help-$profile.txt";
}

sub list_profiles {
    my ($profiles_conf) = @_;
    sort(uniq(map { keys %{$profiles_conf->{profiles}{$_}} } qw(boot install)));
}

sub profiles_exist {
    my ($profiles_conf, $profile) = @_;
    member($profile, network::pxe::list_profiles($profiles_conf));
}

sub find_next_profile_name {
    my ($profiles_conf, $prefix) = @_;
    my $i = undef;
    /^$prefix(\d*)$/ && $1 >= $i and $i = $1 + 1 foreach network::pxe::list_profiles($profiles_conf);
    "$prefix$i";
}

sub add_empty_profile {
    my ($profiles_conf, $profile, $to_install) = @_;
    $to_install and $profiles_conf->{profiles}{install}{$profile} = 1;
    $profiles_conf->{profiles}{boot}{$profile} = 1;
}

sub copy_profile_for_type {
    my ($profile, $clone, $type) = @_;
    my ($pxe, $help) = get_pxelinux_profile_path($profile, $type);
    my ($clone_pxe, $clone_help) = get_pxelinux_profile_path($clone, $type);
    -r $pxe and cp_f($pxe, $clone_pxe);
    -r $help and cp_f($help, $clone_help);
}

sub clone_profile {
    my ($profiles_conf, $profile) = @_;
    my $clone = find_next_profile_name($profiles_conf, $profile);
    if (exists $profiles_conf->{profiles}{install}{$profile}) {
	$profiles_conf->{profiles}{install}{$clone} = 1;
	copy_profile_for_type($profile, $clone, 'install');
    }
    $profiles_conf->{profiles}{boot}{$clone} = 1;
    copy_profile_for_type($profile, $clone, 'boot');
}

sub remove_profile {
    my ($profiles_conf, $profile) = @_;
    foreach my $type (qw(boot install)) {
	delete $profiles_conf->{profiles}{$type}{$profile};
	unlink foreach get_pxelinux_profile_path($profile, $type);
    }
}

1;